I believe all of the colors of butterfly wings, and of all feathered animals are produced in the same way? I've always assumed that "simulation" has a local def

I believe all of the colors of butterfly wings, and of all feathered animals are produced in the same way? I've always assumed that "simulation" has a local definition in the study of biological color reproduction, where light interactions with ultra fine structure at the atomic level is the default, or perhaps maybe on the time scale of evolution, the oldest means of reproducing color. Contrast this witb a much coarser structural phenomenon manifesting at a level much closer to macroscopic is thus considered to be a "cheaper" simulation of that effect, in order to derive its same selective benefits but with less of a radical genetic shift required for the production of the right proteins etc.